in afghanistan, a group of american soldiers took this day to reenlist. america's 235th birthday. a day to stand up and be proud, even if you're sitting down. brian mooar, nbc news, washington. >>> if you plan to celebrate the 4th here in d.c., here's the lineup for tonight. the capital 4th concert will begin at 8:00. the fireworks kick off around 9:15. we'll have a live report on that. that's coming up in our next half hour. the smithsonian metro station and most roads around the mall will be closed. so you might want to give yourself plenty of time to get there. you can also go to nbc washington.com for more details. >>> a day at the beach came to an early and abrupt halt at sandy point state park in maryland today. authorities say a young boy draund drowned after disappearing in the water. elaine reyes has more on what went wrong. >> reporter: at sandy point state park, the sights and sounds of summer are everywhere. on this july 4th holiday, there's also tragedy. >> there were some people with some earphones -- headphones, like scanning the water and everything. they had menti